Improving the Critical Transmission Distance of Inductively Coupled Wireless Power Transfer Having Parity-Time Symmetry
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- Ishida Hiroki
- Department of Physics, Okayama University of Science
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- Akatsu Yasuhito
- Department of Physics, Okayama University of Science
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- Kyoden Tomoaki
- National Institute of Technology, Toyama College
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- Furukawa Hiroto
- National Institute of Technology, Toyama College
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抄録
<p>A wireless power transfer (WPT) system with parity-time symmetry has a critical magnetic coupling coefficient (kmc). A small kmc results in a highly robust, long-distance WPT. We found that the series-series/parallel topology is a good choice to obtain a small kmc. Additionally, a kmc value of 0.04 was achieved by a combination of a solenoid coil of 46µH, low frequency range of 47-56kHz, and buck converter. We investigated the optimal shape of the solenoid coil using an electromagnetic field simulator, and a critical transmission distance (dc) of 77mm was achieved by small transmitter and receiver coils (dimensions: 100mm × 20mm × 10mm). We succeeded in extending dc by 1.8 times over the results from our previous work. dc of 77mm is 2.8 times as large as the cube root of the coil volume.</p>
収録刊行物
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- IEEJ Journal of Industry Applications
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IEEJ Journal of Industry Applications 13 (2), 188-197, 2024-03-01
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